TMD Chain Lock
A keyless chain lock with integrated alarm protection, engineered to actively deter theft and protect your eBike. Smart security, sharp design. ART 2 Certified and approved by insurers for use with insured bikes.
First orders shipped early May
2-year warranty
14-day free returns
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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Customer Support
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FAQ’s
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Contact Us
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Security that’s one step ahead
The TMD Chain Lock combines keyless convenience, integrated alarm protection and ART 2-certified hardware to actively deter eBike theft. Approved by insurers for use with insured bikes. Lasts up to 9 months on a single charge.
Keyless Access
Unlock with the press of a button when your phone is nearby - speedy, secure and seamless access. All without cumbersome keys. If you don’t have your phone with you, a customisable emergency code allows manual unlocking via the lock’s integrated button.
Integrated 100 dB Alarm
A powerful 100 dB alarm activates instantly when tampering is detected - adding an active layer of deterrence.
Soft on your bike. Tough on thieves.
The silicone lock body protects your frame from scratches, while its impact-resistant design withstands heavy blows and accidental drops.
Soft silicone body
A soft silicone body shields your frame against scratches and cushions the lock against accidental drops. The material offers superior grip and reliable handling, whatever the weather.
Hardened steel core
A reinforced steel enclosure protects the lock’s critical components from cutting tools and brute force.
Advanced materials, layered protection.
The soft sleeve combines advanced materials with everyday practicality. At just 1.7kg (110cm version), it’s one of the lightest ART-2 certified chain locks on the market. All without compromising on protection.
Technical polyester outer layer
A double-braided polyester exterior increases durability and helps prevent tearing from everyday wear.
Dyneema & Kevlar reinforcement
High-performance fibres - also used in maritime equipment and bulletproof vests - provide exceptional resistance to cutting and heat.
Hardened steel chain
Inside, a specially hardened manganese alloy steel chain delivers serious resistance while remaining flexible and surprisingly lightweight.
Engineered to withstand serious attacks
Every component is optimised to stop interference. From extreme impact to electronic tampering, the TMD Chain Lock is prepared to protect.
Built to last
Security means reliability in all conditions. Cold, heat and shock resistant - The TMD Chain Lock is engineered to withstand even the harshest weather and wear.
Water resistant
Rain, snow and mud proof, protection is never compromised.
Temperature resistant
Engineered to perform reliably in both extreme cold and high heat.
Shock resistant
Built to withstand heavy impact, including repeated blows and accidental drops.
A simple, powerful App
The TMD Lock App extends control far beyond just the lock itself.
Share Access
Grant your friends and family remote access without having to duplicate or exchange keys.
Activity Insights
See when, where and by whom the lock has been used - including activity from shared users.
Locate Your Lock
Find the last known location of your lock directly within the app, ensuring it’s always traceable.
Frequently asked questions
What makes a TMD Smart Lock secure?
Forgetting or losing your keys is finally a thing of the past.
Our smart locks feature a keyless design with no traditional keyhole, making them immune to conventional break-in methods. Common theft techniques are no longer effective; there is simply nothing to drill, pick, or pull.
By combining keyless Proximity Unlock technology with extremely rugged hardware, TMD Smart Locks are certified to both ART-2 and IP57 standards. This ensures our Smart Locks are officially recognized and approved by insurance providers.
How does the TMD Chain Lock work?
The TMD Chain Lock offers a true keyless experience using advanced Bluetooth Proximity Unlock technology. There is absolutely no faff: your smartphone stays in your pocket, and the lock automatically recognizes your unique digital ID as you approach. Simply press the button on the lock once to unlock and ride away.
For added security, the lock features a built-in 100dB alarm. You can easily arm the alarm via the TMD app or by double-pressing the lock button. Once activated, the alarm will trigger instantly if any unauthorized movement is detected, keeping your ride safe and sound.
Can I unlock without my phone?
Yes. Every TMD Lock features a manual override. Simply use the button on the lock to enter the unique security code you’ve set up in the app, ensuring you’re never locked out.
How long does the battery last?
A single charge keeps your lock powered for approximately 9 months under normal use. When it’s time to top up, you’ll be back to 100% in just 2 hours.
How loud is the alarm?
At 100 decibels, our alarm is designed to be impossible to ignore. The alarm provides a powerful layer of active defense for your e-bike.
What can I do with the TMD Lock App?
The TMD Lock App gives you total control by allowing you to share digital access with friends and family instantly: no physical keys required. You can also monitor real-time activity logs to see exactly who used the lock and track its last known location to ensure it’s always where it should be.
When will I receive my order?
We aim to dispatch all orders within one business day so you can get your security sorted without delay.
Can I return my product for free?
Not the right fit? Return your unused product in its original packaging within 14 days for a free refund. Just contact our support team to get your return label started.
How long is my warranty?
We provide a two-year warranty on all products to ensure your security never misses a beat. Just contact our support team and we'll take it from there.
